EP2692147A1 - Boîtier de transducteur électroacoustique - Google Patents

Boîtier de transducteur électroacoustique

Info

Publication number
EP2692147A1
EP2692147A1 EP12713817.0A EP12713817A EP2692147A1 EP 2692147 A1 EP2692147 A1 EP 2692147A1 EP 12713817 A EP12713817 A EP 12713817A EP 2692147 A1 EP2692147 A1 EP 2692147A1
Authority
EP
European Patent Office
Prior art keywords
enclosure
frame
transducer
members
door panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12713817.0A
Other languages
German (de)
English (en)
Other versions
EP2692147B1 (fr
Inventor
Brad SUBAT
Daniel Hodgkins
David Meeker
Daniel J. SHEEHAN
Martin A. WEBER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bose Corp
Original Assignee
Bose Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bose Corp filed Critical Bose Corp
Publication of EP2692147A1 publication Critical patent/EP2692147A1/fr
Application granted granted Critical
Publication of EP2692147B1 publication Critical patent/EP2692147B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0019—Side or rear panels
    • B60R2011/0021—Doors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/021—Transducers or their casings adapted for mounting in or to a wall or ceiling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • This disclosure relates to electro-acoustic transducer enclosures.
  • Electro-acoustic transducers are sometimes mounted in enclosures.
  • the enclosure design and volume have a substantial effect on the quality of the transducer output.
  • there are space and shape constraints imposed by the environment in which the transducer is located that need to be addressed for a successful enclosure design and thus transducer operation.
  • One example is the mounting of a transducer in the door panel of a vehicle.
  • the transducer must be protected from moisture and thus must be sealed to the door panel.
  • the volume that can be devoted to the transducer and its enclosure, and the shape and configuration of such volume may be severely constrained by other vehicle design considerations.
  • there is a drive to reduce vehicle weight and thus the weight of the transducer enclosure is an important consideration of a successful design for automotive use.
  • one aspect of the disclosure features an apparatus comprising an electro- acoustic transducer, a frame supporting the transducer, and an enclosure comprising first and second enclosure members each coupled to the frame, at least one of the enclosure members comprising foam.
  • the first and second enclosure members may comprise foam.
  • the first and second enclosure members may be made entirely of foam.
  • the enclosure may be made entirely of the first and second enclosure members.
  • the enclosure members may each be directly coupled to the frame.
  • the apparatus may further comprise an acoustic element that acoustically couples an enclosure volume to a listening area.
  • the acoustic element may comprise a port.
  • the port may be formed at least in part by an enclosure member.
  • the port may comprise a tube defining a first length, the tube further defining a first open end inside the enclosure and a second open end that is open to the listening area.
  • the tube may comprise a first partial tube wall formed in the frame and a second partial tube wall formed in an enclosure member, the first and second partial tube walls each defining the first length and coupled together along their lengths to form the tube.
  • the frame may comprise a transducer mounting flange to which the transducer is mounted.
  • the frame may define an enclosure member mounting structure to which the first and second enclosure members are directly coupled.
  • the enclosure member mounting structure may be characterized by a frame plane.
  • the transducer may comprise a front radiating surface that moves along a transducer axis, in which case the transducer axis may be generally parallel to the frame plane.
  • the transducer axis may be parallel to or coincident with the frame plane.
  • the frame may further comprise a diverter that extends in front of the front radiating surface of the transducer.
  • the diverter may comprise a scoop that is located primarily or entirely on one side of the frame plane.
  • the frame may be made of plastic.
  • the apparatus may further comprise a baffle, wherein the frame is coupled to the baffle.
  • the baffle may be selected from a group consisting of a vehicle door panel, a vehicle rear package shelf, a vehicle instrument panel, a room wall and a room ceiling.
  • the transducer may comprise a front radiating surface that moves along a transducer axis, and the transducer axis may be generally parallel to or coincident with the baffle.
  • the first enclosure member may be made entirely of foam.
  • the second enclosure member may comprise vehicle trim.
  • the apparatus may be adapted to be mounted to a vehicle door panel.
  • the frame may be mounted to the vehicle door panel, and the first and second enclosure members may be mounted to the frame.
  • the apparatus may be adapted to be mounted to a vehicle door panel and vehicle trim.
  • the vehicle door panel and vehicle trim may be spaced from one another and the apparatus may be located in this space.
  • the apparatus may further comprise mounting structures located between the apparatus and the vehicle door panel and the vehicle trim.
  • the mounting structures may comprise one or more first foam blocks located between the first enclosure member and the vehicle door panel and one or more second foam blocks located between the second enclosure member and the vehicle trim.
  • a speaker enclosure comprising an electro-acoustic transducer comprising a front radiating surface that moves along a transducer axis, a plastic frame supporting the transducer, wherein the frame comprises a transducer mounting flange to which the transducer is mounted, an enclosure made entirely of first and second enclosure members each directly coupled to the frame, the enclosure members made entirely of foam, and a port that acoustically couples an enclosure volume to a listening area.
  • the frame may define an enclosure member mounting structure to which the first and second enclosure members are directly coupled, the enclosure member mounting structure may be characterized by a frame plane, and the transducer axis may be generally parallel to or coincident with the frame plane.
  • a speaker enclosure adapted to be mounted to a vehicle door panel, comprising an electro-acoustic transducer comprising a front radiating surface that moves along a transducer axis, a plastic frame supporting the transducer and adapted to be mounted to the vehicle door panel, wherein the frame comprises a transducer mounting flange to which the transducer is mounted, an enclosure made entirely of first and second enclosure members each directly coupled to the frame, the enclosure members made entirely of foam, and a port that acoustically couples an enclosure volume to the interior of the vehicle.
  • the frame may define an enclosure member mounting structure to which the first and second enclosure members are directly coupled, the enclosure member mounting structure may be characterized by a frame plane, and the transducer axis may be generally parallel to or coincident with the frame plane and the vehicle door panel.
  • Figure 1 is a perspective view of an electro-acoustic enclosure apparatus.
  • Figure 2 is an exploded view of the electro-acoustic enclosure of figure 1.
  • Figure 3 is a front view of the electro-acoustic enclosure of figure 1.
  • Figure 4 is a rear perspective view of the electro-acoustic enclosure of figure 1.
  • Figure 5 is a front perspective view of the electro-acoustic enclosure of figure 1 mounted to a vehicle door frame.
  • Figure 6 is a cross-sectional view of the electro-acoustic enclosure of figure 1 mounted to a vehicle door frame.
  • Figure 7 is a second cross-sectional view of the electro-acoustic enclosure of figure 1 mounted to a vehicle door frame.
  • Figure 8 is a perspective view of an electro-acoustic enclosure apparatus.
  • Figure 9 is an exploded view of the electro-acoustic enclosure of figure 8.
  • Figure 10 is a bottom perspective view of the electro-acoustic enclosure of figure 8.
  • Figure 11 is an interior perspective view of one of the enclosure members of the electro-acoustic enclosure of Figure 8.
  • Figure 12 is a cross-sectional view of an electro-acoustic enclosure apparatus mounted in a vehicle door.
  • Figure 13 is a cross-sectional view of an electro-acoustic enclosure apparatus mounted to a vehicle door.
  • the electro-acoustic transducer enclosure apparatus comprises at least two enclosure members that entirely define, or at least in part define, the exterior walls of the enclosure as well as the enclosure volume. At least one such enclosure member is made either partially or fully of foam. This substantially reduces the weight of the enclosure.
  • the apparatus has a stiff frame. The foam can be coupled to the frame in any manner appropriate for the materials and constructional requirements of the enclosure, and known to those skilled in the field.
  • Electro-acoustic transducer enclosure apparatus 10 is shown in figures 1 through 5. Electro-acoustic transducer 30 generates low frequency acoustic signals, preferably from about 40 to about 150 Hz, in response to an electrical signal, not shown, applied to transducer 30. Transducer 30 comprises a diaphragm with front radiating surface 33 that moves along axis 34, figure 3. Axis 34 is perpendicular to the plane of the page in figure 3. [00025] Transducer 30 is mounted in frame 20. Frame 20 is relatively stiff such that it does not substantially flex in response to the movement of the transducer diaphragm; flexure could damp or otherwise alter the output. Also, frame 20 requires sufficient strength to properly mount the transducer. In an embodiment in which the speaker enclosure apparatus is mounted in a vehicle door panel, frame 20 also should exhibit sufficient stiffness to create a water-tight seal to the door panel.
  • transducer 30 is mounted such that its radiating axis 34 is generally parallel to or coincident with the plane P in which enclosure member mounting structure 21 lies.
  • transverse transducer mounting flange 22 which is an integral part of frame 20.
  • the outer ring 31 of the frame of transducer 30 is mounted to flange 22.
  • Flange 22 could alternatively be a separate structure that was itself coupled to frame 20, for example using fasteners or by welding. Mounting of the transducer such that its radiating axis is parallel to or coincident with plane P is not a requirement of the enclosure apparatus.
  • the transducer could alternatively be mounted such that its radiating axis was transverse to or perpendicular to plane P.
  • One result of mounting the transducer such that its radiating axis is in or parallel to plane P is that the transducer diaphragm is typically located on both sides of plane P.
  • the listening area is on one side of this plane (in the present embodiment, listening area 55 is on the side of plane P that includes the interior of the vehicle in which apparatus 10 is found).
  • sound diverter 24 is located in front of transducer front radiating surface 33. Diverter 24 is scoop shaped to direct sound into listening area 55. Diverter 24, in this example, is located entirely on one side of plane P as shown in figure 3.
  • diverter 24 in this embodiment is an integral part of frame 20 but could alternatively be a separate member that was coupled to enclosure member mounting structure 21.
  • Transducer enclosure 35 creates a fully or partially enclosed volume behind the transducer diaphragm.
  • Enclosure 35 can be sealed to create a fully-enclosed volume, or can be partially open, for example by including a port; the port typically leads from the enclosure volume to the listening area.
  • Enclosure 35 is made from at least two separate enclosure members. In the present embodiment, enclosure 35 is made entirely from two separate members: enclosure members 40 and 50.
  • Enclosure members 40 and 50 are each directly coupled to frame 20. Enclosure members 40 and 50 thus essentially define the shape and volume of enclosure 35.
  • Frame 20 functions as both an intermediate mounting surface for members 40 and 50 as well as the speaker enclosure structural member that carries all of the transducer-related stresses and enclosure mounting-related stresses of apparatus 10.
  • Thin, elongated, generally planar, frame- shaped enclosure member mounting structure 21 of frame 20 defines opposed surfaces to which enclosure members 40 and 50 are directly mounted.
  • One such surface 26 is indicated in figure 4.
  • the surfaces are complementary to the inner peripheral faces of members 40 and 50, to allow members 40 and 50 to be coupled to frame 20 in a manner that is essentially air tight.
  • Members 40 and 50 create the necessary internal volume for the enclosure.
  • Members 40 and 50 should be air tight and stiff enough to inhibit sound pressure loss. If the enclosure is used in a location that is not fully environmentally controlled, members 40 and 50 need to withstand the environment through such qualities as heat resistance and water resistance.
  • members 40 and 50 are made entirely of foam, and frame 20 is made entirely of a stiff plastic. Since foam can have a density that is substantially less than that of plastic, typically up to about 90% (or more) less, creating a transducer enclosure apparatus almost entirely of foam results in a substantial weight reduction as compared to an all plastic enclosure. In one non-limiting embodiment, members 40 and 50 are made entirely from
  • GECETTM a polyphenylene oxide/polystyrene copolymer with a density of no more than 7 pounds per cubic foot
  • members 40 and 50 are essentially air tight up to about one bar internal pressure, resist shape change to at least about 100° C, exhibit a maximum use temperature of at least about 70° C, and possess a flexure strength of at least about 150 psi.
  • frame 20 is made of glass-filled ABS (acrylonitrile butadiene styrene) with a density of no more than about 75 pounds per cubic foot, and has a thickness of no more than about 3 mm.
  • frame 20 resists shape change to at least about 100° C, exhibits a maximum use temperature of at least about 90° C, and possesses a flexure strength of at least about 15,000 psi.
  • transducer 30 is mounted to transverse transducer mounting flange 22.
  • Enclosure members 40 and 50 are coupled to the opposite flat faces of enclosure member mounting structure 21.
  • partially annular transducer mounting surfaces 43 and 53 of members 40 and 50, respectively, are directly coupled to the back face of transducer mounting flange 22.
  • the coupling of members 40 and 50 to frame 20 can be accomplished in the manner that suits the materials which the two enclosure members and the frame are made. In the embodiment in which the enclosure members are made of foam and the frame is made of plastic, this direct coupling can be accomplished using an adhesive, or by contact welding the surfaces together. A more positive interlocking of the three members can be facilitated with a tongue and groove construction in addition to adhesive.
  • enclosure member mounting structure 21 is an injection molded plastic frame that defines tongue structures (not shown) on at least a portion of the faces to which members 40 and 50 are mounted.
  • the edges of members 40 and 50 that are directly coupled to the frame e.g., edge 54 of member 50
  • a complementary groove not shown
  • Adhesive can be used to maintain an air tight bond.
  • one of members 40 and 50 can be directly coupled to the frame, at least in part, by insert molding of the previously-created frame in the mold used to create the foam enclosure member.
  • the construction creates an air tight enclosure that also includes a port that is open to the listening area.
  • the port comprises tube 18 that is defined by partial tube wall 23 that is an integral portion of frame 20 and partial tube wall 42 that is an integral portion of member 40.
  • the two tube halves come together to create a tube having a first opening 28 located within the enclosure volume and a second opening 41 that is open to the listening area.
  • the tube halves can be bonded together via adhesive or welding.
  • the port could be accomplished in other manners as is known in the field.
  • the tube could be could be a separate structure, or all of the tube could be a part of frame 20, or all of the tube could be a part of member 40.
  • One or both of the enclosure members are made at least partially of foam.
  • the enclosure members are each coupled to a frame. Making both enclosure members entirely of foam can decrease the enclosure weight, as compared to an all plastic enclosure, by about 40%.
  • Plastic or another structural material such as metal may comprise part of one or both of the enclosure members. This could be done to accomplish a particular structural functionality of the enclosure. For example, this could potentially allow the enclosure itself rather than the frame alone to fully or partially support the transducer enclosure apparatus on its mounting surface.
  • the electro-acoustic transducer enclosure is mounted to a baffle.
  • baffles include vehicle door panels, vehicle rear package shelves, vehicle instrument panels, other surfaces of vehicles, a wall of a room, and a room ceiling, for example.
  • Figure 5 depicts transducer enclosure 10 located in a vehicle door, with frame 20 (specifically, structure 21 and diverter 24) mounted to door panel 57 of door 56.
  • Frame 20 includes openings that accept fasteners such as screws that allow the frame to be mounted to door panel 57. This mounting accomplishes a water-tight seal that prevents water from leaking into the vehicle interior through the opening in panel 57 in which frame 20 is located.
  • transducer 30 generally aligns the transducer axis with the baffle; typically the axis is parallel to or coincident with the baffle although the axis could also be somewhat transverse to the plane of the baffle. Because frame 20 is stiff, forces generated by the moving transducer diaphragm cause little or no deflection of frame 20. Also, because such forces are mainly in the plane of the baffle, there is less vibration of the baffle created as opposed to a typical door mounted speaker that is mounted with its radiating axis perpendicular to the door panel, as described in co-pending application 11/591,285 filed November 1, 2006, the disclosure of which is incorporated herein by reference. Diverter 24 directs essentially all of the sound into the vehicle interior. Port opening 41 is also located in the vehicle interior.
  • Figures 6 and 7 are cross-sections through apparatus 10 mounted to vehicle door panel 57.
  • Figure 6 is taken through the port tube 18 comprising partial tube walls 23 and 42.
  • FIG. 21 is mounted to door panel 57 and carries enclosure members 40 and 50. Interior door panel trim 59 typically covers apparatus 10.
  • Figure 7 is a cross-section taken at a location at which tube 18 is not present.
  • Figures 8 through 1 1 depict electro-acoustic transducer enclosure apparatus 60 that comprises frame 70 and enclosure 85.
  • Enclosure 85 comprises first enclosure member 80 and second enclosure member 90.
  • Members 80 and 90 are mounted to generally planar enclosure mounting structure 75 of frame 70.
  • One or both of members 80 and 90 comprise foam.
  • members 80 and 90 are made entirely of foam. The foam used is chosen based on performance and cost. For environments that do not require the high-temperature stability of vehicle interiors, a foam such as expanded polystyrene may be appropriate.
  • Electro-acoustic transducer 62 is mounted in opening 71 in frame 70. Opening 72 acoustically couples the volume defined within first enclosure member 80 and the volume defined within second enclosure member 90. A port open to the listening area is accomplished with tube 91 coupled to enclosure member 90 and defining an opening 93 open to the interior of enclosure 85 and opening 92 open to the listening area.
  • Frame 70 comprises generally planar enclosure mounting structure 75 and legs or standoffs 73. Preferably, frame 70 is a unitary injection molded plastic piece.
  • Legs 73 allow apparatus 60 to be fixed to a surface or structure. In an example in which apparatus 60 is employed as a bass box for a motor vehicle, legs 73 allow the apparatus to be bolted to a structure of the automobile. One exemplary placement would be under the arm rest between bucket seats. Another exemplary placement would be in the vehicle spare tire well.
  • FIG. 12 depicts electro-acoustic transducer enclosure apparatus 110 that comprises frame 112 and enclosure 113.
  • Enclosure 113 comprises first enclosure member 114 and second enclosure member 116.
  • Members 114 and 116 are mounted to generally planar opposing faces of frame 112.
  • One or both of members 114 and 116 comprise foam.
  • members 114 and 116 are both made entirely of foam.
  • Apparatus 110 is mounted to vehicle door panel 122 (which is typically made of sheet metal) and vehicle interior trim panel 124 (e.g., an interior door trim panel that is typically made of plastic) such that apparatus 110 floats between these two panels.
  • vehicle door panel 122 which is typically made of sheet metal
  • vehicle interior trim panel 124 e.g., an interior door trim panel that is typically made of plastic
  • Foam mounting blocks 117-120 can optionally be used to facilitate mounting.
  • Blocks 1 17-120 can be located between enclosure 1 13 and panels 122 and 124.
  • Mounting blocks 117-120 cushion enclosure 1 13 from panels 122 and 124, and provide a simple means of interference-fit mounting of a standard-sized enclosure where there may be slight differences in the distance between panel 122 and panel 124 from vehicle to vehicle.
  • member 114 can conform to the shape of and be mounted directly to panel 122: this may provide additional strength to the enclosure while allowing thinner foam to be used for a foam enclosure member at that location.
  • FIG. 13 depicts electro-acoustic transducer enclosure apparatus 130 that comprises frame 132 and enclosure 133.
  • Enclosure 133 comprises first enclosure member 134 and second enclosure member 136.
  • Members 134 and 136 are mounted to generally planar faces of frame 132.
  • Member 134 is made entirely of foam.
  • Member 136 is a portion of vehicle interior trim panel 137 (e.g., an interior door trim panel), which is typically a molded plastic panel made from a material such as ABS.
  • frame 132 is mounted to vehicle door panel 142 and is also mounted to interior trim panel 137.
  • Apparatus 130 thus accomplishes a transducer enclosure that is mounted to the vehicle interior trim panel and has only one separate enclosure member in addition to the trim panel rather than two additional enclosure members as in the other embodiments.

Abstract

La présente invention se rapporte à un appareil (10) comprenant un transducteur électroacoustique (30), un bâti (20) qui supporte le transducteur (30), et un boîtier (35) composé de deux éléments de boîtier (40, 50) qui sont raccordés chacun au bâti (20). Au moins l'un des éléments de boîtier (40, 50) est fait en mousse, partiellement ou en totalité.
EP12713817.0A 2011-03-28 2012-03-06 Enceinte pour un transducteur électroacoustique Active EP2692147B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/072,837 US8837768B2 (en) 2011-03-28 2011-03-28 Electro-acoustic transducer enclosure
PCT/US2012/027806 WO2012134730A1 (fr) 2011-03-28 2012-03-06 Boîtier de transducteur électroacoustique

Publications (2)

Publication Number Publication Date
EP2692147A1 true EP2692147A1 (fr) 2014-02-05
EP2692147B1 EP2692147B1 (fr) 2016-11-23

Family

ID=45952640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12713817.0A Active EP2692147B1 (fr) 2011-03-28 2012-03-06 Enceinte pour un transducteur électroacoustique

Country Status (5)

Country Link
US (1) US8837768B2 (fr)
EP (1) EP2692147B1 (fr)
JP (1) JP5823018B2 (fr)
CN (1) CN103460717B (fr)
WO (1) WO2012134730A1 (fr)

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EP3351012B1 (fr) * 2015-09-17 2020-07-15 Bose Corporation Dispositif acoustique
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US10645484B2 (en) * 2016-12-23 2020-05-05 Tadeusz Kwolek Loudspeaker cabinets, systems, and methods of construction
CN107404690A (zh) * 2017-08-04 2017-11-28 奥音科技（镇江）有限公司 一种应用于电声换能器的壳体
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Also Published As

Publication number Publication date
EP2692147B1 (fr) 2016-11-23
CN103460717B (zh) 2016-07-20
JP2014511081A (ja) 2014-05-01
JP5823018B2 (ja) 2015-11-25
CN103460717A (zh) 2013-12-18
US20120250929A1 (en) 2012-10-04
WO2012134730A1 (fr) 2012-10-04
US8837768B2 (en) 2014-09-16

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